This indicator will illuminate when the front fog lights are on.
See also:
Installation of electric/electronic devices
Electric/electronic devices installed after buying the car or in aftermarket
shall bear the and marking:
Fiat Auto S.p.A. authorizes the installation of transceivers provided that installation
...
Dipped beam headlights
To change the bulb, remove the protective cover (2), release the catch (A) and
remove the bulb (B). ...
If an interior light burns out
For the type of bulb and power rating, see “When needing to change a bulb”. ...